Home / 3,411.70-5,115.15-1,330.90

Finding the Fourth Proportional to 3,411.70, 5,115.15 and 1,330.90

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Solution

The fourth proportional to 3,411.70, 5,115.15 and 1,330.90 is: 1,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.70 : 5,115.15 = 1,330.90 : x
  2. Step 2: Convert to fraction form
    3,411.70/5,115.15 = 1,330.90/x
  3. Step 3: Cross multiply
    3,411.70x = 5,115.15 × 1,330.90
  4. Step 4: Simplify right side
    3,411.70x = 6,807,753.14
  5. Step 5: Solve for x
    x = 6,807,753.14/3,411.70
  6. Step 6: Final answer
    x = 1,995.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.